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Lock
is a mechanical fastening device which may be used on a door, vehicle, or container. Commonly, it can be released by using a key or combination.
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Key
is a device which is used to open a lock. It usually consists of a specially-shaped piece of flat metal, with cut notches, (forming teeth) and/or milled grooves which fit the shape of the lock and can open the correctly combinated lock by (usually) being turned in the lock housing. This portion of the key is referred to as the blade. The wider grip, referred to as the bow, is found at the top of the key to facilitate turning.
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Scale
is a device using for measuring the weight of an object. In this eBay category you will find some really nice old General Store and Candy Store scales.
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Tools
are a device for doing a particular job that does not use a motor, but is powered solely by the person using it. Examples are almost endless, from general tools like the hammer to specific tools like calipers. What type of tools can I find on eBay? Blacksmithing, Blowtorches, Soldering, Carpentry, Woodworking, Flashlights, Guides, Catalogs, Machining, Mechanics, Plumbing, Steam Fitting, Pulleys, Block & Tackle, Tool Boxes, Chests and many other old tools.
